Table 1.
Mean radius (nm) | Concentration per flask (g/mL) | Crystalline structure | Surface chemistry | |
Silica | 60 ± 1.3 | 3.3 × 10-2 | amorphous | hydrophilic |
Silica/Iron Oxide | 80 ± 2.5 | 2.2 × 10-3 | amorphous silica, crystalline iron oxide | hydrophilic |
PEG-coated Au | 30 ± 0.15 | 1.1 × 10-4 | crystalline | hydrophilic |